EP3886277B1 - Boîtier à blindage électrique - Google Patents

Boîtier à blindage électrique Download PDF

Info

Publication number
EP3886277B1
EP3886277B1 EP21151300.7A EP21151300A EP3886277B1 EP 3886277 B1 EP3886277 B1 EP 3886277B1 EP 21151300 A EP21151300 A EP 21151300A EP 3886277 B1 EP3886277 B1 EP 3886277B1
Authority
EP
European Patent Office
Prior art keywords
cable
housing
metallic coating
bypass line
assembly according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21151300.7A
Other languages
German (de)
English (en)
Other versions
EP3886277A1 (fr
Inventor
Thomas Lorenz
Richard REEPEN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Auto Kabel Management GmbH
Original Assignee
Auto Kabel Management GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Auto Kabel Management GmbH filed Critical Auto Kabel Management GmbH
Publication of EP3886277A1 publication Critical patent/EP3886277A1/fr
Application granted granted Critical
Publication of EP3886277B1 publication Critical patent/EP3886277B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/081—Bases, casings or covers
    • H02G3/083—Inlets

Definitions

  • Shielded cables are well known. They are formed by an inner conductor that is covered with an inner insulation.
  • a shielding conductor lies on the inner insulation, in particular in the form of a conductor mesh, a foil or a combination thereof.
  • An outer insulation is applied to the shielding conductor.
  • the shielding conductor is almost inevitably damaged and opened, so that the inner conductor carrying the power is unshielded. Adequate shielding must nevertheless be ensured, particularly in the area of transfer points between individual cables and the connection of the cable to other electrical components, for example in the area of electrical distributors, fuses and the like.
  • housings are already known that are coated with a metallic coating.
  • the shield conductor that goes into the The cable routed into the housing makes contact with the metallic coating of the housing, so that the electrical potential of the shielding conductor is short-circuited with the metallic coating of the housing.
  • the subject case has a case body.
  • This housing body is formed by housing outer walls, which in particular completely enclose a receiving volume.
  • At least one electrical component can be arranged within the receiving volume, also referred to as the interior of the housing.
  • This electrical component can be a connection terminal, a distribution bar, a fuse, a switch, an electronic component or the like, as well as a combination and a plurality of the components mentioned.
  • the electrical component serves to contact the line of one or more cables routed into the housing. These cables are shielded cables with the above structure.
  • the inner conductor of the cable can be contacted inside the housing. The inner conductor of the cable is exposed so that the housing has to take over the shielding function of the shielding conductor of the shielded cable.
  • a cable bushing is provided on the housing body.
  • the housing body has two cable bushings, through which a cable can be routed in each case.
  • a cable bushing can be equipped with a cable grommet and/or strain relief.
  • the base body is made of a plastic.
  • the base body can be produced in an injection molding process or a 3D printing process.
  • the housing body has a metallic coating on at least one of its lateral surfaces. The housing body can thus carry the electrical potential of the shielding conductor of the cable inserted into the housing or the shielding conductor of the cable inserted into one housing on its metallic coating when the coating is in contact with the shielding conductor.
  • bypass line be routed at least between the cable bushings within the receiving volume.
  • the bypass line is used to electrically conduct the potential of the metallic coating and thus the shielding conductor of the cable that was inserted into the housing.
  • the bypass line is electrically short-circuited with the metallic coating.
  • the bypass line can be formed as a conductor of a bypass cable. Due to the short circuit with the metallic coating, the bypass line creates a short circuit between the cable bushings.
  • the conductor cross section of the bypass line can be larger by orders of magnitude than the effective conductor cross section of the metallic coating.
  • the bypass line can have a line cross section between 1.5 cm 2 and 25 cm 2 . This reduces the ohmic losses of the shielding conductor between the two cable bushings minimized, so that effective shielding is also possible across the housing between two cables.
  • the bypass conductor can be contacted with the coating not only between the bushings, but also at one or more points distributed over the housing.
  • an electrical contact area for a shielding conductor of a cable that can be inserted into the cable bushing be formed in the area of the respective cable bushings, in particular on the inner lateral surfaces of the cable bushings.
  • the contact area makes it possible to create the metallic coating with the shielding conductor of the cable inserted in the cable gland.
  • the contact area can also be partially formed from the metallic coating itself.
  • the metallic coating can also be formed along the inner lateral surface of the cable bushing. This results in direct contact between the shielding conductor and the metallic coating and thus a short circuit, for example when the cable inserted into the cable bushing is pressed in the cable bushing, so that the metallic coating is at the electrical potential of the shielding conductor.
  • the bypass line is directly electrically connected to the contact area.
  • the contact area serves on the one hand for short-circuiting the shielding conductor of the inserted cable with the metallic coating and on the other hand for short-circuiting the metallic coating with the bypass line.
  • the contact area can hold the bypass line in particular in a clamping manner.
  • the bypass line can be materially connected to the contact area.
  • the contact area can extend into the interior of the housing in the form of a connecting lug, a connecting lug or the like.
  • the contact area for connection to the bypass line can be formed there, for example by clamping or by means of a material bond.
  • the bypass line be surrounded by an insulator inside the receiving volume.
  • the bypass line can be formed as a cable core of a bypass cable.
  • the bypass cable can be formed from the bypass line and the sheath, which is formed as an insulator.
  • the insulator is provided to prevent the electrical components inside the accommodation volume from coming into contact with the potential of the shielding conductor, the metallic coating and the bypass line.
  • the inner lateral surface of a respective cable bushing be coated with metal.
  • This metallic coating of the cable bushing allows direct contact to be established between a shielding conductor of an inserted cable and the metallic coating.
  • the metallic coating is in particular formed continuously from the inner and/or outer lateral surface of the housing to the inner lateral surface of the cable bushing.
  • the housing body be coated with the metallic coating on its inner lateral surface and/or its outer lateral surface. If the inner lateral surface of the housing body is coated, then the housing wall of the housing body, which is preferably formed from a plastic, serves at the same time as a mechanical support and insulator. The housing thus insulates the electrical coating along the inner lateral surface from the environment. A coating on the outer lateral surface is also possible.
  • the metallic coating be applied electrochemically.
  • the metallic coating can be applied wet-chemically.
  • the housing body can be formed from a plastic and coated with the metallic coating in a wet-chemical immersion process.
  • the metallic coating can also be in the form of a powder coating, a paint finish or the like.
  • an additional insulator can be applied to the metallic coating on the inner and/or outer lateral surface.
  • the metallic coating can thus be applied sandwich-like between the housing wall and an inner and/or outer insulation layer.
  • the housing body be formed from a base body and a closure body.
  • a housing body can be in the form of a trough and the closure body can be in the form of a cover.
  • the base body and the closure body can be connected to one another in a form-fitting manner, so that they form a closed housing body.
  • the cable bushing is preferably in the base body, but can also be provided in the closure body.
  • the housing body be produced using a 3D printing process.
  • the metallic coating can be applied to at least one of the lateral surfaces of the housing body directly during printing.
  • Another aspect is a system according to claim 7.
  • the in 1 Cable 2 shown is a single core cable. It goes without saying that multi-core cables can also be used in the present case and can be combined with all the general and specific exemplary embodiments and claims described here. In the case of multi-core cables, each individual core can be screened in the manner described below, or the cores can be provided with a single screen together.
  • the cable 2 shown comprises a wire 4.
  • the wire 4 can be formed as a stranded wire or as a solid wire.
  • the core 4 is encased by an inner insulation 6.
  • a shielding conductor 8 is placed around the inner insulation 6.
  • the shielding conductor 8 can be formed as a braided conductor and/or as a foil.
  • the shielding conductor 8 is encased in an outer insulation 10.
  • the inner insulation 6 and the outer insulation 10 can be made of a non-conductive plastic.
  • the cable 2 can be stripped in a central area 12 .
  • the cable 2 can be stripped in an end area 14 .
  • the cable 2 can be arranged with the area 12 or the area 14 in a cable bushing of a housing, as will be described below, so that the shielding conductor 8 is short-circuited with a metallic coating of the housing.
  • FIG. 2 shows a schematic view of a housing 20.
  • the housing 20 has a housing body formed from a base body 22 and a closure body 24.
  • FIG. A receiving volume 26 is provided within the base body 22 .
  • Cable bushings 28 can be provided in at least one of the housing walls of the base body 22 and/or the closure body 24, which are preferably different from one another. The cable bushings 28 break through the wall of the housing 20.
  • a cable 2 with a region 12 or a region 14 can be arranged in the cable bushings 28.
  • the receiving volume 26 in the base body 22 can be closed with the aid of the closure body 24 .
  • the closure body 24 can latch at least in a form-fitting manner relative to the base body 22 .
  • a terminal lug 40 can extend from the metallic coating 22b, in particular in the area of the cable bushing 28, into the interior of the housing 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cable Accessories (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (7)

  1. Assemblage avec un boîtier (20) blindé électriquement avec
    - un corps de boîtier (22, 24) entourant un volume de réception pour au moins un composant électrique, et
    - au moins deux passages de câbles (28) arrangés sur le corps de boîtier (22, 24) et traversant le corps de boîtier, où
    - le corps de boîtier (22, 24) est formé d'une matière plastique et est revêtu d'un revêtement métallique (22b) au moins sur l'une de ses surfaces enveloppante, et dans la zone du passage de câble respectif (28) est formée une zone de contact électrique (40) pour un conducteur de blindage d'un câble introduisable dans le passage de câble, caractérisé en ce
    - qu'une ligne bypass (32) est guidée à l'intérieur du boîtier (20),
    - que la ligne bypass (32) est guidée entre les passages de câble (28) à l'intérieur du volume de réception et
    - que la ligne bypass (32) est reliée directement à la zone de contact (40) et est ainsi court-circuitée électriquement avec le revêtement métallique (22b).
  2. Assemblage selon la revendication 1,
    caractérisé en ce
    - que la ligne bypass (32) est entourée d'un isolant à l'intérieur du volume de réception.
  3. Assemblage selon l'une des revendications précédentes,
    caractérisé en ce
    - que la surface enveloppante intérieure d'unepassage de câble (28) respective est revêtue d'un métal.
  4. Assemblage selon l'une des revendications précédentes,
    caractérisé en ce
    - que le corps de boîtier (22, 24) est revêtu du revêtement métallique (22b) sur sa surface enveloppante intérieure et/ou sa surface enveloppante extérieure.
  5. Assemblage selon l'une des revendications précédentes,
    caractérisé en ce
    - que le revêtement métallique (22b) est appliqué électrochimiquement.
  6. Assemblage selon l'une des revendications précédentes,
    caractérisé en ce
    - que le corps de boîtier (22, 24) est formé d'un corps de base (22) et d'un corps de fermeture (24) et que le corps de fermeture (24) est reliable au corps de base (22) au moins par liaison de forme.
  7. Système avec un assemblage selon l'une des revendications précédentes, un composant électrique à l'intérieur du boîtier ainsi qu'au moins un câble électrique (2) qui est guidé à l'intérieur du boîtier (20) par le passage de câble (28) et qui est relié au composant électrique,
    caractérisé en ce
    - que le câble (2) est exempt d'une isolation extérieure dans la zone d'au moins l'un des passages de câble (28) et qu'un conducteur de blindage (8) du câble (2) situé dans cette zone est en contact électrique, au niveau d'au moins l'un des passages de câble (28), à la fois avec le revêtement métallique (22b) du boîtier et avec la ligne bypass (32).
EP21151300.7A 2020-03-27 2021-01-13 Boîtier à blindage électrique Active EP3886277B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020108509.5A DE102020108509B4 (de) 2020-03-27 2020-03-27 Elektrisch geschirmtes Gehäuse

Publications (2)

Publication Number Publication Date
EP3886277A1 EP3886277A1 (fr) 2021-09-29
EP3886277B1 true EP3886277B1 (fr) 2023-07-19

Family

ID=74180972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21151300.7A Active EP3886277B1 (fr) 2020-03-27 2021-01-13 Boîtier à blindage électrique

Country Status (3)

Country Link
EP (1) EP3886277B1 (fr)
DE (1) DE102020108509B4 (fr)
ES (1) ES2954533T3 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2932612B2 (de) * 1979-08-10 1981-05-21 Siemens AG, 1000 Berlin und 8000 München Kabelschirmerdung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2666695B1 (fr) * 1990-09-07 1994-03-18 Cegelec Connecteur pour cable de type paire blindee a drain de masse.
FR2678784B1 (fr) * 1991-07-03 1993-10-22 Logistel Dispositif pour la realisation de derivations de cables blindes.
FR2716580B1 (fr) * 1994-02-18 1996-04-12 Cegelec Boîte de raccordement pour une pluralité de câbles blindés.
JP3687432B2 (ja) 1999-08-26 2005-08-24 松下電工株式会社 シールド線の金属ケースへの取付構造
JP6727951B2 (ja) 2016-06-24 2020-07-22 三菱重工サーマルシステムズ株式会社 電動圧縮機の電線導入部構造、これを備えたシールド電線、および電動圧縮機

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2932612B2 (de) * 1979-08-10 1981-05-21 Siemens AG, 1000 Berlin und 8000 München Kabelschirmerdung

Also Published As

Publication number Publication date
EP3886277A1 (fr) 2021-09-29
DE102020108509B4 (de) 2024-01-11
DE102020108509A1 (de) 2021-09-30
ES2954533T3 (es) 2023-11-23

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